Igniting device for miners&#39; safety-lamps.



12K WOLF. IGNTING DEVISE POR MINERS SAFETY LAMPS. APPLICATION 'FILED APE.S0,1912.

Patented Feb.' 11, 193.

' protected trom damages,

. seran Specification ot Letters Patent.

. ppicaten filed April 3o, 1912. Serial Re. 694,190.

To all whom may concern Be it known that i, PAUL ioLr, a sub ject oit the oit' anony, residing at Zwickau in the i*lingdoni oi Saxony, Funpireo't tic. ry, time invented a new and useful igniting Device tor Miners7 Safety- Lannl c, et' afl'iieh the oliowing is a speciiication. y

nhe hit-inerte known devices 'for igniting miners sa;Le y-laiiips by means of sparks produced by striking or rubbing an igniting metal or composition present the great drawback, that by actuating the device particles are detached from the igniting metal or composition, ot' which paiticles very many in their unburnt state move about in the interior et the iamp and are apt to come in contact with the hot chimney made from wire gauze whereby they are ignited. As has been proved, explosions of. the fulminating damps surrounding the safety-lamp can be thereby produced. For this reason all the known ignliting have been in general pronounced to be unsate.

My invention relates to improvements in such igniting devices, whereby the said drawback is avoided and the device is rendered quite safe and perfectly reliable. The new device is so constructed, that it can be easily withdrawn from the miners safetylamp and exchanged for another igniting device, that the several essential parts of the device when worn can be easily exchanged for new ones and that the essential parts areV i suitable means and thus which is of im.-

normally hidden by portance in mines.

In the accompanying drawing: Figure 1 is an elevation of an igniting device embodying my invention, Fig. 2 is a similar view of a modified igniting device, a protecting cover heilig turned upward, Fig. 3 is a vertical section on an enlarged scale through the greater upper part of a device. similar to Fig. 1, when turned through an angle of 180 around the axis of -the two coaxial spindles, which are here shown to be coupled together, Fig. 4 is a similar section, in which the lower spindle is disengaged from the upper spindle, and Fig. 5 is a horizontal section through the line A-B in Fig. 3.

Similar letters of reference refer to similar parts througlnfz-ut the several views.

In a casing a ot an y suia'ole construction devices of this kind 'axis of the two spindles dent that the'upper spindlec is by the bow y a lower spindle o is mounted to turn'` andto longitudinally move. ,It is made in one with a head c provided inits outer surface with a cam groove c1, y greater part ina plane at right angles to the axis, as is clearly shown. The spindle E') has in' its upper part a central' bore b1, in which the upper spindle c loosely engages. `his spindle c is made in one with a grooved head f and carries above the head f la spiral spring L" (Fig. 5) and a tiling' wheel 7c of hardened steel with tine teeth, which Wheel is secured by means of a nut Z or the like and is in any known manner prevented from turning. Both spindles b and c with the spiral spring 'i andthe filing wheel c can be introduced from above through the casing o, so that the lower spindle b projects downward from the casing, as is shown at Fig. l. The casing a has ay slit at (Fig. 5), in which the outer bent end 'of ythe' spiral spring z" can engage, this slit a4 eX-. tending from the upperv edge of'the casing downward to' a point where thespring z' occupies its normal position shown.

a lug a3 between them, so that a bow g can be fastened on the lug a3 by means of 'a screw k, while its two ends pass throughthe slots al a2 and engage in.' the slot al of the lower head c and in the slot f1 of the upper head f respectively. It isto-be noted, that' whereas the upper end of the bow. g may be,

made broad, the lower end requires to be narrow, so as to be able to pass through" the cam groove eli As the groove f1 is entirelyv in a plane at right angles to the common b and c, it is evig prevented from longitudinal 'motion and can only turn. The'lower spindle o, on the contrary, is by the bow g'engagin' inV the cam groove @g1 of its head c compellegi to once reciprocate during any complete revolution. The upper head f isl provided with a clutch-pin 7? and the lower head `e` with 'which latterv tor the in Fig. 3 can strike and take the pinp along with it on thespindle 7) being turned. For the lower position of the lower, spindle b shown in Fig. 4, however, thetwo pins p and p1 can not engage one another.

A springy handled, that is a twice looped wire, is made to engage with its ytwo bent which lis for. the

4The easing L is provided with two slots al, a2 and Patented Feb. Mig.

and oppositely pointed ends in correspond! ing 'recesses'at the lower end yof the spindle 'b and with its side parts 'adjoining the iointed end s'in a'ny of three :turr'ows b2 ,L713 on either sideot rthe spindle. Then it is possible to turn the handle CZ saylfroni the positionshown in Fig. 1 through an angle of 90 into the c'entral plane of the spindle b or through an angle of 180 into the other extreme position on the left. `When the handle d is in the central plane of the spindle b, the whole device can be comfortably .inserted and carried in' ones pocket..y

In order to be able ,tol wind up the spiral spring z' and to pre-vent the spindle l)v from turningy inthe wrongy direction, whereby the spring i mightl -otherwise be damaged, l

ltube u` forming p'ai'tof thelcasing a.

the said tooth spaces 64 under the pressure of a helical spring t guided in a suitable adjusting screw o serves :t'or regulating the pressure of the spring t.

An igniter m adapted to work with the' tiling wheel cis guided in a tube a4 forming part Vof the casing a and consists of a bolt madek from some known igniting metal or composition. lrlhe igniter m vis pressed against the line teeth ot the tiling wheel 7c by means. of a helical spring w, the pressure o which can be regulatedby means of a screw a: so as to compensatefor anyI4 wear of the igniter m. In Figs. 3- and 4 the casing a is at'the top shown to be provided with a turnable cover g for protecting the tiling wheel 7c from damage. A leaf spring jz/ fastened on the casing a byfmeans of a screw z serves for holding the cover Q either in its closed state'shown or in its open state.

"Ihis spring y is provided with a hole through which the tube a4 passes, so that the spring can' freely exert its pressure. The cover g is provided with a hole .q1

through which. the nut Z can pass. The

vcasing a may in this casebe provided with v 4a square aperture a in front of the ling l wheel 7c' near the place where the igniter in comes in contact with the wheel 7a.

I Where so preferred, the casing a maybe "1 may havean aperture r1..

g with the cap r' may be omitted altogether as is shown at Fig. l. y

The igniting device described operates-as. v, follows: Normally thelower spindle`vb'occue;

v :pies its upperv position shown at Fig 3 and cut out at the upper corner, so as to expose the filing wheel k (see Fig. 9), and the turnable cover q may be provided with a cap r for encircling the wheel 7c and the cap Or the cover ythe aperture a5 or AnVv 'in the .posite to the" wick. Then the handle CZ is turned intoV a position at right angles to the spindle b, say as is shown at Fig. l, after vwhich it is turned in the dii'ectioiro the hands of a watch, so that its pinlpl'engaging the pin. p takes the same along with it and by the upper spindle c winds -up the, spiral spring z'. Vhen the lower end of the bo'w g engages in the curved portion of the cani grooveI c1' and thereby shifts the spindle Z) outward (that is.downward in the draw, ying), the pin 22.1 of the lower head c will come out of engagement with the pin p of the upper head f, whereby the tiling wheel 7a is released, so that under theaction of the spiral` spring z' it will rapidly return to its initial position while rubbing oli' line particles from the igniter m and producing numerous sparks which torni together a single compact flame that passes through r1, strikes the wick of the lampA and ignites the benzin in the wick with an absolute certainty.

After the above explanations it is obvious, that after taking ott the springy handle (l from the lower spindle unscrewing the screw 7L and withdrawing the bow g from the casing a, unscrewing the two screws 1),' m and withdrawing the parts t, s, w, m and' turning upward the cover g it is Veasy to push the lower spindle o upward for withdrawing the outwardly bent Aend of the spiral spring z' from the slit a* in the casing a and finally both spindles b, c with all parts on them from the casing a.

It is possible to produce with this `igniting device any number of consecutive igniting flames byumerely turning around the handle (Z as many times as is required. It.

a decided advantage of the new device,

that the i ing wheel 7c 'during its rapid return scrape voff the ignitcr m only slight chips, which aie certain to completely b'nln compact flame produced. igniter m is used very economically.`

The igniting device can be .varied in many respects without departing from the spiritvv o'l' my invention.

l. Tn an igniting device of the'class described. the combination with a casing, of a spindle turnable in said casing and prevented from'longitudinal motion, a tiling wheel on said spindle, a spring-pressed ig iioiiiter guided in .said casing 'adapted tob'ear against said filing wheel, a 'driving spindle' coaxial Iwith said spindle turnable and lon# gitudinally movable in said casing, a' clutch one member of which is connected with said spindle and the other member. vwith said driving spindle, meanstor holding the two members of said clutch in engagement duri the-'."Csnga 0f the device is, vinsertefiii ageing a part of any revolution and for detach- 130 two spindles coaxially'turnable in said casing and onevhaving a groove and the other 'a' cam groove,"two lugs in' said casing engaging in the grooves of said two spindles, whereby one 'of the spindles is prevented from longitudinal motion and the other is once reciprocated on every revolution, a liling wheelv on the spindle prevented -rom longitudinal motion,l a `spring-pressed igniter guided in said casing adapted to' .bear against said filing wheel, two clutch-pins on said two spindles adapted to engage one another during a part of any revolution and to disengagefrom one another during the other part ofthe revolution, and a spring l -connecting the spindle carrying said filing Aso ing and one lthe revolution, and a wheel with said casing and adapted to be wound up by turning the longitudinally vvmovable spindle in one direction and to l lrecoil on said two clutch-pins being disengaged. l

3. In an igniting device of the class described, the combination with a casing, of two spindles coaxially turnable in said cashaving a groove-and the other a cam groove7 a detachable bow fastened on said casing and adapted to engage with its two ends through slots in said casing in the grooves otsaid two spindles, whereby one of thespindles is prevented from longitudinal motion and the other is once. reciprocated on every revolution, a filing wheel on the spindle prevented from longitudinal motion, a spring-pressed igniter guided in said casing adapted to bear against said {iling wheel, two clutch-pins on said two spindles adapted to engage one another during a part of any'yrevolution and to disengage from one another during the other ypart of spring connecting the spindle carrying said tiling wheel with said casing and adapted to be wound up by turning the longitudinally movable spindle in one direct-ion and to recoil on said two clutch-pins being disengaged.

4. In an igniting device of the class described, the combination with a casing, of a spindle turnable in said casing, a wheel on said spindle,

. niter guided in said casing adapted to bear againstV said tiling wheel, and a `springpressed cover turnable on said ca sing and provided with a cap adapted to encircle said longitudinal motion, a spring-pressed niter guided in said casing adapted to bear tilingl a spring-pressed igtiling wheel while leaving an aperture for the iiame to be produced.

5. In an igniting device of the class dej scribed, the combination with a casing, of two spindles coaxially turnablc in said casing and one having a groove and the other a cani groove, two lugs in said casing'engaging in the grooves of said two spindles, whereby one of the spindles is prevented from longitudinal ino-tion and the other is once reciprocated on every revolution, a filing wheel on the spindle prevented from longitudinal motion, a spring-pressed igniter guided in said casing adapted to bear against said iiling wheel, two clutch-pins on said two spindles adapted to engage oneen- 1 other during a part of any revolution and to diseng'age from one another during the other part of the revolution, a spring connecting the spindle carrying said filing wheel with said casing and adapted to be wound up by turning /the longitudinally movable spindle in one direction and to recoil on said two clutch pins being disengaged, and means for preventing the longitudinally movable spindle from turning in the opposite direction.

' 6. In an igniting device of the class described, the combination with a casing, of two spindles coaxially turnable in said casing and one having a groove and the other a cani groove, two lugs 'in said casings engaging in the grooves of said. two spindles, whereby one of the spindles is prevented from longitudinal motion and the other is once reciprocated on every revolution, a ltiling wheel on the spindle prevented from against said filingwheel, two clutch-pins on said two spindles adapted to engage one another during a part of any revolution and to: disengage i'froin one lanother during the other part ot the revolution, a spring connecting the spindle carrying said filing wheel with said casing and adapted to be wound up by turning thc longitudinally movable spindle in one direction and to recoil on said two -clutch-pins being disengaged, the reciprocating spindle having for a part of its length longitudinal grooves so as to forni a ratchet wheel7 and a springpressed pawl guided in said casing adapted to engage any ofthe longitudinal grooves ot' the reciprocating spindle for' preventing this spindle from turning in the opposite direction. l

rAUL woLF.

Witnesses: A

OSCAR 'ALEXANDER WEBER, RICHARD ARNO KLINGK. 

